Weighing device



March 31, 1931. E. KARRER 1,798,538

WEIGHING DEVICE i Filed June 9, 1927 JUL/Enh@ 52755712 KE-E555 vthe massweighed readily Patented Mar. 31, 1.9.31

UNITED STATES PATENT OFFICE f ENOCH KARRER, F CLEVELAND HEIGHTS, OHIO,.ASSIGNOR TO THE IB. F. GOODRICH COMPANY, OF NEW YORK, N. Y., ACORPORATION 0F NEW YORK WEIGHIN G DEVICE Application filed .Tune 9,1927.

This invention relates to weighing devices and especially to devices inwhich provision is made for registering the amount by which the articleweighed exceeds or is less than a standard weight.

My chief objects are to provide a convenient device of this characteradapted to read directly in terms of over-weight and underweight; toprovide for readings vof overweight and of under-weight in terms oflinear or volumetric measurement, so that to the standard weight, forexample, as by removing from a mass of powdered or liquid material asuitable volumetric quantity thereof as indicated by the reading orremoving from a piece of strip material such as a strip of rubberbelting a suitable length thereof as indicated by an over-weight readingin linear units and to provide for quickly and conveniently7 bringing abeam scale to balance for the ordinary weighing of articles ormaterials.

Of the accompanying drawings:

Fig. 1 is an elevation, with a part sectioned and broken away, of aweighirg` device embodying my invention in its preferred form.

F igf2 is a section of the same online 2-2 of Fig. 1.

Fig. 3 is an elevation of a portion of the device illustrating aprovision for certain tolerance in the recording of over-weight andunder-weight readings.

Referring to the drawings, the embodiment of the invention here showncomprises a scale of the beam type having the usual scale pans and 11mounted in the usual manner on a balance beam 12 fulcrumed at 13 upon astandard 14, the scale pans being provided with downwardly extendingStems 15, 16 having their lower ends connected by respective links 17,18 with a stationary pivot 19 mounted directly under the fulcrum `13, toprovide a parallel-motion for maintaining the scale pans in horizontalposition as the balance beam 12 tilts upon its fulcrum 13.

Secured to the middle part of the balance beam 12 is an upwardlyextending indicator may be brought Serial No. 197,572.

2() associated with a segmental scale dial 21 reading in units ofweight.

The portion of the indicator 20 adjacent the balance beam 12 is formedas an arch which is spanned by a threaded bar 22 having mounted thereona pair of spaced-apart flanged nuts 23, 23. Secured to a high part ofthe standard 14 is a vertical spring 24: having a long indicator securedto its upper end in extension thereof, the indicator 25 being associatedwith a segmental scale dial 26 adapted to read in units of linear orvolumetric measurement, as may be desired, in accordance with thespecific gravity and cross-sectional area of strip material, for eX-ample, or in accordance with the specic gravity of a powdered or liquidmaterial, to be weighed, the dial 26 being detachably mounted so that itreadily may be removed for substitution by a diilerent dialcorresponding to a different substance or a different type of stripmaterial to be weighed.

Adjacent the threaded bar 22 the indicator 25 is provided with anactuating stud 27 projecting from the indicator to a position betweenthe flanged nuts 23, the construction being such that when a standardweight is placed upon the scale pan 10 or l1 and an article or a mass ofmaterial is placed upon the other scale pan and the runderweivht orover-weight of the article or mass results in an unbalanced condition ofthe lbeam 12, the oil-balance force will be sustained by the spring 24,through engagement of one or the other of the nuts 23 with the stud 27,and the deflection of the spring 24 by the off-balance force will beregistered by the indicator 25 upon the scale dial 26.

The base of the. spring 24 is preferably secured against flexure to apoint a little below the fulcrum a-Xis 13 of the scale beam 12, as willbe seen clearly in F 2, so that very little sliding movement of the stud27 on the flanged nuts 23 will occur in the angular movement on theindicators. The nuts 23 may be so spaced apart as to permit a certaintolerance of under-weight or overweight with respect to the movement ofthe indicator 25 from its middle position and the amount of suchtolerance may be varied by changing the spacing of the nuts 23 upon thethreaded bar 22.

In the operation of the device, assuming that it is desired to obtain apiece of strip material or a quantity ot powdered material weighing loz. for example, a standard l oz. weight is placed upon the scale pan 10and a piece ot the strip material or a quantity of the powdered materialsomewhat in eX- cess et l oz. in weight lis placed upon the scale pan1l. As this causes the scale beam to ov r-balance in the direction ofthe scale pan 1l, the movement of the beam l2 beyond the horizontalposition, subject to such tolerance as is permitted by the spacing ofthe nuts 23, is resisted by the spring 24 and consequently expressesitself in deflection ot the spring, which deiiectionis registered by theindicator 25 upon the scale dial 26.

The operator is then able instantly to determine the excess ot materialin terms of weight by reading the scale 2l, if desired, yand alsoinstantly to determine the excess of material in terms ot linear orvolumetric measurement, as the case may be, by a reading of the scaledial 26. In the case ot' a sample or test piece ot belting, :torexample, the indicator 25 may give a reading upon the dial 26corresponding to the weight ot a section or" the belting Egt in length,in which case the operator is informed that by cutting a piece 3/4 longfrom the specimen being weighed the sample piece will be brought to thedesired weight. Y

Similarly in the case ot powdered or liquid material the operator may beinformed by a reading of the dial 26as to what volume of the material itis necessary to remove in order to bring the scale beam l2 to balance.

In weighing a mass consisting` ot a number of articles all ofsubstantially equal weight as in the case et weighing candies, the dial26 may be omitted, and, the approximate weight ot each piece or articlebeing known, the dial 2l alone, reading in units of weight, will enablethe operator to bring the scale beam l2 quickly to balance by removingsuch number of articles as correspond to the registered amount ofover-weight.

It will be obvious that negative readings upon the dials 26 and 2l willresult when the material or the thing weighed is of less than thestandard weight and that the reading of the dial 26 or ot the dial 2lwill facilitate the matter of making proper additions to balance thescale. f

The invention'r is susceptible of modificaion as to the type ot scaleemployed and as to the construction and arrangement ot parts, and I donot desire'to limit my claims except as may be required by the priorart.

I claim: l

1. A weighing cator responsive to the weight ot the thing weighed and ascale dial associated with said weighed and a scale Vbeing correlated tothe torce ot the said device comprising an indi indicator and graduatedto read in units ot measurement ot a dimensional characteristic havingreference to a weight characteristic ot the material weighed, the scaledial being graduated trom a base mark representing a standard weightvalue.

2. A weighing device comprising an indicator responsive to the weightor' the thing dial associated with said indicator, the said dial having-a base mark representing a standard-weight value and being graduated inboth directions from said base mark in units ot measurement ot acharacteristic other than that of weight but having reference to aweight characteristic ot the thing weighed.

3. A weighing device comprising a balance beam, an indicator and a scaledial for registering movement ot said beam, the dial being graduated:trom a base mark representing balance ot the beam, the said beam beingot the horizontally-balancing type, and yielding means tor resistingmovement et the beam trom the position of balance, the graduations oithe dial being correlated to the force of the said yielding means andVreading in units of measurement ot a dimensional characteristic havingreference to a weight -characteristic ot the'thing weighed.

Li. A weighing device as deiined in claim 3 inV which a tolerance isprovided between the beams position ot balance and the position at whichit begins to be opposed by the yielding means deiined. l Y

5. A weighingdevice comprising a balance beam, an indicator and a scaledial for registering movement o1 said beam, the dial being graduated-troni a base mark representing balance ot the beam,and yielding meansfor rsisting movement ot the beaintrcm the position ot balance, thegraduations ot the dial yielding means and graduated to read in units ofquantity other than units ot weight but having reference to a weightcharacteristic ot the thing weighed.

In witness whereof I have hereunto set my hand this 3rd day of J une,1927.

ENOCH KARRER.

